(19)
(11) EP 0 421 417 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
02.09.1992 Bulletin 1992/36

(43) Date of publication A2:
10.04.1991 Bulletin 1991/15

(21) Application number: 90119027.2

(22) Date of filing: 04.10.1990
(51) International Patent Classification (IPC)5: G11B 5/008, G11B 5/592, G11B 15/12, G11B 5/86, G11B 15/467
(84) Designated Contracting States:
DE FR GB NL

(30) Priority: 04.12.1989 JP 315859/89
22.12.1989 JP 333906/89
16.12.1989 JP 326246/89
30.10.1989 JP 283346/89
06.11.1989 JP 289015/89
04.12.1989 JP 315858/89
24.11.1989 JP 305120/89
04.10.1989 JP 260810/89

(60) Divisional application:
94112420.8 / 0626676
94112452.1 / 0625776
94112454.7 / 0625777
94112419.0 / 0633560

(71) Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
Chiyoda-ku Tokyo (JP)

(72) Inventors:
  • Takada, Yukari, c/o Mitsubishi Denki K.K.
    Nagaokakyo-shi, Kyoto (JP)
  • Onishi, Ken, c/o Mitsubishi Denki K.K.
    Nagaokakyo-shi, Kyoto (JP)
  • Hongo, Kimitoshi, c/o Mitsubishi Denki Engin. K.K.
    Nagaokakyo-shi, Kyoto (JP)

(74) Representative: Pellmann, Hans-Bernd, Dipl.-Ing. et al
Patentanwaltsbüro Tiedtke-Bühling-Kinne & Partner Bavariaring 4
80336 München
80336 München (DE)


(56) References cited: : 
   
       


    (54) Magnetic recording and reproducing apparatus


    (57) The apparatus is capable of recording video, audio and other information on a magnetic tape by, for example, the helical scanning method. A rotary head is rotated at an m-fold speed to record intermittent tracks on the magnetic tape so that real-time simultaneous monitoring is performed. By high-speed dubbing due to high-density intermittent recording and by increasing the number of repetition of track scanning, the information is recorded and reproduced simultaneously with a plurality of channels. Any tracking error is detected to form a continuous and uniform track pattern. With this intermittent comb-shaped recording, reciprocating recording and reproducing can be realized.






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